Shutoff device, particularly gate for shutoff system, such as railroad crossing, is transferred from open-position to closed position, and is transferred back into open position

摘要

The shutoff device (101) is transferred from an open-position to a closed position, and is transferred back into the open position. A retaining medium (130) is provided to generate torque acting on a shutoff arm, such that another torque resulting from the gravity of the shutoff arm counteracts. An independent claim is also included for a method for closing and opening a shutoff device.